![]() ![]() If you finish this, your car will reset itself by disabling the “check engine” light. Wait a few seconds before disconnecting the negative battery cable and reconnecting it with the check engine light, then reconnect the negative battery cable once the check engine light has been reset. Inorder to pass inspection your car needs to complete a full drive cycle so that all (8) internal monitors have a status of "Ready". Step 3: Reinstall the fuse and reconnect the battery terminal. The check engine light alert could be something as simple as a reminder to change your engine oil every 5,000 miles, so having a check engine light come in is not all bad at times. Start and run the engine for at least 30 seconds. It forces the computer to refresh its saved state through a reboot. Typically it takes several driving cycles or about four to five days for the Lexus check engine light to ToyoTundra said: When a malfunction is first detected, the malfunction is temporarily. It will also allow the ECU to relearn the air/fuel mixture. If the ignition switch is turned OFF and then ON again, and. The problem might also show up after a sudden stop or after driving on a rough road.Will disconnecting battery reset check engine light. If I'm right about the problem being contamination in the tank, then I'd also expect it to go away after the foreign materials have had some time to settle. If the problem is water leaking into the tank then you may notice it getting worse when there is rain, or maybe even heavy dew in the morning. If the problem is condensation, then keeping the tank full will help (and the problem should be worse during the humid months). I don't think Sea Foam would hurt, but it wouldn't address the water problem, so I don't think it would help either. If it is water a fuel dryer, such as Heet would probably help. If the problem is common in these vans, it seems likely that it would be related to water – either condensation or possibly water getting into the tank somehow. What seems more likely to me is that there is contamination in your fuel tank that gets stirred up when fuel is added. The pump isn't likely to "know" that you've filled up. ![]()
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